Patients treated with EKOS protocol (i.e. low dose and short duration), showed measured improvement in quality of life, exercise tolerance and physical functioning at one year.
The OPTALYSE PE Study is about optimum duration and dose of tPA with the acoustic pulse thrombolysis procedure for submassive Pulmonary Embolism
Tapson, Victor, et al., “A Randomized Trial of the Optimum Duration of Acoustic Pulse Thrombolysis Procedure in Acute Intermediate-Risk Pulmonary Embolism: The OPTALYSE PE Trial.” JACC: Cardiovascular Interventions Jul 2018, 11 (14) 1401-10
Clinical significance
Trial overview
- Prospective, randomized oparallel-group
- 101 patients with acute intermediate-risk PE
- Patients randomly sorted into four separate low dose/short duration EKOS protocol cohorts
- 17 centers in U.S.A & Europe
- 23-26% reduction (p<0.0001) in RV/LV ratio 48 hr. from baseline across all cohorts
- Infusion time: 2, 4, 6 hrs. Total dose: 4/8 -12/24 mg
- 4 major bleed (3%)
- 1 ICH
Patients
Key results
- RV/LV ratio continued to reduce after 48 hours.
- P value <0.0001 @ 365 days.
- Long-term OPTALYSE safety & efficacy at 365 days.
- PEmb-QoL score decreased for all cohorts.
- PROMIS-PF score increased for all cohorts.
RV/LV Ratio Continued to reduce after 48h P Value <0.0001 @365d
| Mortality | Recurrent PE | |
| OPTALYSE PE | 2% | 2% |
| PEITHO-AC | 8% | N/A |
| PEITHO-TNK | 10% | N/A |
| Baglin – AC | N/A | 3.70% |
Long-term OPTALYSE safety & efficacy at 365d
PEmb-QoL score decreased for all cohorts
PROMIS-PF score increased for all cohorts
Trial conclusions
The EKOS System’s very low dose and short duration regimens, in the OPTALYSE PE Trial, resulted in rapidly improved measures of right-heart function that were maintained for one year. Additionally, the favourable mortality rates, recurrent PE rates, and quality-of-life results demonstrate long-term benefits of EKOS therapy. This data further proves the PE clinical efficacy and safety of the OPTALYSE PE treatment protocols.
This study confirmed that EKOS was safe and effective with a lower dose tPA and shorter duration. OPTALYSE provided a proven patient protocol for the interventional treatment of PE. It also supplied long-term RV remodeling and QOL data to the EKOS data set.
Trial bibliography
2018 – OPTALYZE PE: Optimum Duration and Dose of tPA with the Acoustic Pulse Thrombolysis Procedure for Submassive Pulmonary Embolism
Tapson, Victor, et al., “A Randomised Trial of the Optimum Duration of Acoustic Pulse Thrombolysis Procedure in Acute Intermediate-Risk Pulmonary Embolism: The OPTALYSE PE Trial.” JACC: Cardiovascular Interventions Jul 2018, 11 (14) 1401-10.
https://pubmed.ncbi.nlm.nih.gov/30025734/
2020 – OPTALYSE PE: G. Piazza MD, MS et al., “One-Year Echocardiographic, Functional, and Quality of Life Outcomes After Ultrasound-Facilitated Catheter-Based Fibrinolysis for Pulmonary Embolism.” Cardiovascular Interventions Aug 2020, 13 (08), :e009012. doi: 10.1161/CIRCINTERVENTIONS.120.009012. Epub 2020 Aug 6. PMID: 32757658; PMCID: PMC7434215.
https://pubmed.ncbi.nlm.nih.gov/32757658/
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